E-BLUE SILENZ EMS145BK Adjustable DPI 2400 Silent Button USB Wired Mouse Silent clicking button: The silent clicking buttons are tailor made for the one who want to enjoy quiet computing experience. Silent-Z creates no disturbance during function. No interference to the others will be caused. A cool and solemn outlook: the mouse is with fashionable and cool appearance. It is processed by plastic molding with UV finish. Extra weight is added in the mouse to increase its solidity. Users can enjoy a stable computing experience. Big rubber scroll: the scroll button is installed to let you flip the pages smoothly. The anti-slip mats at the bottom of the mouse help to maintain a stable operation. You can browse the website in an efficient and convenient way. LED illumination: the LED illumination at the lateral part sparkles during function. It helps you to differentiate yourself in any occasions. Four levels of DPI: Four levels adjustable DPI 800/1200/1600/2400 is installed in the mouse to fulfill your need of both home and entertainment.